The factor of usability on external cues to prevent human errors

Abstract

Human errors can be prevented when the person concerned is made to notice from the outside. The external cue must lead to the prevention of the human errors. The external cues should be useful. Then, this research was to examine experimentally whether behavior of using external cue information was influenced from the usability of the cue. Participant's task is to memorize the places of the targets and recall them by clicking the targets. Participants can use some help information during the recall phase. The display way of the help information was varied. One is that the palce of target was displayed by the coordinates of two dimension of matrix panel(low usability). The other is that the color of target was changed from green to purple(high usability). As a result, when the usability was higher, participants use the external cues and it was suggested that external cues lead to the prevention of human errors.